Install guide

ARMY TM 5-6675-308-34
MARINE CORPS TM 08837A-34/2
Table 4-19. PS Testing and Troubleshooting – Continued
Malfunction
Test procedure
Normal indication indication/corrective action
2r Connect DVM test leads to POWER
SUPPLY HTR 1 and PWR RTN test jacks
DVM indicates 0
(~0.9) VDC Measure voltage between K2-X1 and
K2-X2. If less than 10V, replace K2;
if greater than 10V, replace sequence
monitor circuit card assembly A5
2s.
2t.
2u.
2v.
2w
2x.
2y.
2z.
2aa.
2ab.
2ac.
Connect DVM test leads to POWER
SUPPLY HTR 2 and PWR RTN test jacks
Set multimeter to AC volts and connect
test leads to POWER SUPPLY 115V /0
and PWR RTN test jacks
Connect multimeter test leads to POWER
SUPPLY 115V f$JO and PWR RTN test
jacks
Connect multimeter test leads to POWER
SUPPLY COMP BLO and PWR RTN test
jacks
. Connect multimeter test leads to POWER
SUPPLY IMU BLO and PWR RTN test
jacks
Connect multimeter test leads to POWER
SUPPLY 26V ~0 and PWR RTN test
jacks
Disconnect multimeter PSTS and press
POWER SUPPLY OFF switch; then set
MODE switch to FULL LOAD
Press POWER SUPPLY ON switch. Set
DVM to DC volts and connect DVM to
POWER SUPPLY +28V and PWR RTN
test jacks
Press POWER SUPPLY OFF switch, set
FUNCTION switch to -28V, press
POWER SUPPLY ON switch, and connect
DVM to POWER SUPPLY -28V and PWR
RTN test jacks
Disconnect DVM from PSTS
Set multimeter to AC volts. Press POWER
SUPPLY OFF switch, set FUNCTION
switch to 115V
LO, press POWER SUP-
PLY ON switch, and connect multimeter
to POWER SUPPLY 115V LO and PWR
RTN test jacks
DVM indicates 0 (~0.9) VDC
Multimeter indicates 85 to
115 VAC
Multimeter indicates 100 to
121 VAC
Multimeter indicates 45 to
65 VAC
Multimeter indicates 45 to
65 VAC
Multimeter indicates 25.5 to
28.4 VAC
DVM indicates +26 to +30V
DVM indicates -24V to -28V
Multimeter indicates 95 to
125 VAC
NOTE
If voltage is out of tolerance,
check input power before
taking corrective action, step
Same as 2r
If incorrect, replace power inverter
assembly A6
Same as step 2t
If incorrect, replace power inverter
assembly A6, then C2
If incorrect, replace power inverter
assembly A6, then C3
If the voltage is out of tolerance,
replace power inverter assembly A6
Voltage out of tolerance; replace 28V
converter-regulator circuit card
assembly A3
Same as step 2z
Voltage out of tolerance; replace power
inverter assembly A6
2c.
4-113